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Unisys CWP4663 - 486 DX2 system - Phoenix BIOS

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First post, by gbin

Posted on 
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So the motherboard is a Tulip TC40.
It came with the PhoenixBios Version 4.03 and oh lord it is really buggy: cannot detect LBA drives, 2048+ cylinders make it crash, 2000 date bug.

I haven´t found a Bios update anywhere on the interwebs, is there anyone with a more recent version of it? It looks like the flash utility needs a platform.bin, is it possible to make one and update the other part from another machine image?

Thanks in advance for your help! This forum is really awesome.

Reply 1 of 2, by gbin

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I found it! Buried in the wayback machine.

This is an update for the Tulip TC40 1996-10-21.

I flashed it on my CWP4663. You need a clean boot floppy formatted with format a: /s, copy the content of this archive and use update.bat.

What I observed:
- it fixed the large disks in DOS
- it correctly identified a DX4 instead of a 486SX or unknown enhanced CPU.
- it can detect automatically the timings of the VGA monitor

Enjoy!

Attachments

  • Filename
    40961021.exe
    File size
    238.58 KiB
    Downloads
    31 downloads
    File license
    Public domain

Reply 2 of 2, by Horun

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gbin wrote on 2020-10-18, 19:46:
I found it! Buried in the wayback machine. […]
Show full quote

I found it! Buried in the wayback machine.

This is an update for the Tulip TC40 1996-10-21.

I flashed it on my CWP4663. You need a clean boot floppy formatted with format a: /s, copy the content of this archive and use update.bat.

What I observed:
- it fixed the large disks in DOS
- it correctly identified a DX4 instead of a 486SX or unknown enhanced CPU.
- it can detect automatically the timings of the VGA monitor

Enjoy!

Great ! Do you have the Archive Org Wayback machine link to the page you got it from ?
There could be other information about the board that could be useful to someone....

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun

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